Earlier, German Finance Minister Wolfgang Schaeuble said Europe must keep up pressure on Greece to fulfil its financial obligations as he rejected the perception that the upcoming German election has put debt-crisis management on hold. Germany heads to the polls in September.

Shareholders of Paris-based Publicis Groupe and New York-based Omnicom will each hold about 50% of the new company, Publicis Omnicom Group. Publicis Chief Executive Officer Maurice Levy and John Wren, his opposite number at Omnicom, will be co-CEOs.

Market participants will be tracking the US Federal Reserve Federal Open Market Committee (FOMC) meet, beginning 30 July. The Fed could provide more clarity on the future pace of US monetary stimulus at the end of the two-day meet.